Spring 创建名为';项目控制器';:通过字段'表示未满足的依赖关系;服务';;
我使用以下配置和代码创建spring引导应用程序 pom.xml:Spring 创建名为';项目控制器';:通过字段'表示未满足的依赖关系;服务';;,spring,spring-boot,spring-cloud,alibaba-cloud,Spring,Spring Boot,Spring Cloud,Alibaba Cloud,我使用以下配置和代码创建spring引导应用程序 pom.xml: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:s
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>jeecg-boot-parent</artifactId>
<groupId>org.jeecgframework.boot</groupId>
<version>2.3.0</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>my-pm-project</artifactId>
<dependencies>
<dependency>
<groupId>org.jeecgframework.boot</groupId>
<artifactId>jeecg-system-cloud-api</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<dependency>
<groupId>org.jeecgframework.boot</groupId>
<artifactId>jeecg-boot-base-common</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
</dependencies>
</project>
package cn.my.pm.project.service;
import cn.my.pm.project.entity.Project;
import com.baomidou.mybatisplus.extension.service.IService;
public interface IProjectService extends IService<Project> {
}
package cn.my.pm.project.service.impl;
import cn.my.pm.project.entity.Project;
import cn.my.pm.project.mapper.ProjectMapper;
import cn.my.pm.project.service.IProjectService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
@Service
@Slf4j
public class ProjectServiceImpl extends ServiceImpl<ProjectMapper, Project> implements IProjectService {
}
package cn.my.pm.project.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import cn.my.pm.project.entity.Project;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Service;
public interface ProjectMapper extends BaseMapper<Project> {
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.my.pm.project.mapper.ProjectMapper">
</mapper>
package cn.my.pm.project.entity;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.math.BigDecimal;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
import com.fasterxml.jackson.annotation.JsonFormat;
import org.springframework.format.annotation.DateTimeFormat;
import org.jeecgframework.poi.excel.annotation.Excel;
import org.jeecg.common.aspect.annotation.Dict;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;
@Data
@TableName("my_info")
public class Project implements Serializable {
private static final long serialVersionUID = 1L;
private java.lang.String id;
private java.lang.String myName;
private java.lang.String myType;
private java.lang.String myType;
private java.lang.String myManager;
private java.lang.String myInfo;
private java.lang.String myDetails;
private java.lang.String myImage;
}
package cn.my;
import org.apache.shiro.spring.boot.autoconfigure.ShiroAnnotationProcessorAutoConfiguration;
import org.apache.shiro.spring.boot.autoconfigure.ShiroAutoConfiguration;
import org.apache.shiro.spring.boot.autoconfigure.ShiroBeanAutoConfiguration;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication(exclude = {ShiroAnnotationProcessorAutoConfiguration.class, ShiroAutoConfiguration.class, ShiroBeanAutoConfiguration.class})
@EnableDiscoveryClient
@EnableFeignClients
public class ProjectApplication {
public static void main(String[] args) {
SpringApplication.run(ProjectApplication.class, args);
}
}
应用程序:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>jeecg-boot-parent</artifactId>
<groupId>org.jeecgframework.boot</groupId>
<version>2.3.0</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>my-pm-project</artifactId>
<dependencies>
<dependency>
<groupId>org.jeecgframework.boot</groupId>
<artifactId>jeecg-system-cloud-api</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<dependency>
<groupId>org.jeecgframework.boot</groupId>
<artifactId>jeecg-boot-base-common</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
</dependencies>
</project>
package cn.my.pm.project.service;
import cn.my.pm.project.entity.Project;
import com.baomidou.mybatisplus.extension.service.IService;
public interface IProjectService extends IService<Project> {
}
package cn.my.pm.project.service.impl;
import cn.my.pm.project.entity.Project;
import cn.my.pm.project.mapper.ProjectMapper;
import cn.my.pm.project.service.IProjectService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
@Service
@Slf4j
public class ProjectServiceImpl extends ServiceImpl<ProjectMapper, Project> implements IProjectService {
}
package cn.my.pm.project.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import cn.my.pm.project.entity.Project;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Service;
public interface ProjectMapper extends BaseMapper<Project> {
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.my.pm.project.mapper.ProjectMapper">
</mapper>
package cn.my.pm.project.entity;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.math.BigDecimal;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
import com.fasterxml.jackson.annotation.JsonFormat;
import org.springframework.format.annotation.DateTimeFormat;
import org.jeecgframework.poi.excel.annotation.Excel;
import org.jeecg.common.aspect.annotation.Dict;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;
@Data
@TableName("my_info")
public class Project implements Serializable {
private static final long serialVersionUID = 1L;
private java.lang.String id;
private java.lang.String myName;
private java.lang.String myType;
private java.lang.String myType;
private java.lang.String myManager;
private java.lang.String myInfo;
private java.lang.String myDetails;
private java.lang.String myImage;
}
package cn.my;
import org.apache.shiro.spring.boot.autoconfigure.ShiroAnnotationProcessorAutoConfiguration;
import org.apache.shiro.spring.boot.autoconfigure.ShiroAutoConfiguration;
import org.apache.shiro.spring.boot.autoconfigure.ShiroBeanAutoConfiguration;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication(exclude = {ShiroAnnotationProcessorAutoConfiguration.class, ShiroAutoConfiguration.class, ShiroBeanAutoConfiguration.class})
@EnableDiscoveryClient
@EnableFeignClients
public class ProjectApplication {
public static void main(String[] args) {
SpringApplication.run(ProjectApplication.class, args);
}
}
但当我运行应用程序时,错误消息是:
ERROR org.springframework.boot.SpringApplication:858 - Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'projectController': Unsatisfied dependency expressed through field 'service'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'projectServiceImpl': Unsatisfied dependency expressed through field 'baseMapper'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'cn.my.pm.project.mapper.ProjectMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1395)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:849)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
at cn.my.ProjectApplication.main(ProjectApplication.java:18)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'projectServiceImpl': Unsatisfied dependency expressed through field 'baseMapper'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'cn.my.pm.project.mapper.ProjectMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1395)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593)
... 19 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'cn.my.pm.project.mapper.ProjectMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1654)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1213)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593)
... 32 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:64977', transport: 'socket'
如何修复它?Spring的抱怨是您没有定义类型为
ProjectMapper
的Bean,它说它需要满足Autowire请求。看看你的代码,我在这里展示的代码中没有看到这样一个Bean的定义
我猜问题的确切点是隐藏的,因为您没有向我们展示
serviceinpl
类的定义。我的猜测是,这就是实际的参考是,Spring正在尝试连接的地方。显然,字段名是baseMapper
Spring似乎找不到Mapper。
试一试
}原因是该软件包未添加
@MapperScan
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
@MapperScan(value={"org.abc.modules.**.mapper*", "cn.my.pm.**.mapper*"})
public class MybatisPlusConfig {
……
}
那么就没有错误了。这很有帮助。谢谢。